Check Engine Light

[CDN_cobalt]

my check engine light came on in my 2007 Coabalt LT 2.2L... i went to throw the OBD2 reader on it and all it says is "Link..." it wont read any codes...i checked all the fuses under the hood and under the dash and the only blown fuse was for the cig lighter...

any ideas?

 

[FASTL61]

thats it!the cig lighter powers the obd2 port.change it and your good

 

[CDN_cobalt]

Seriously?....i changed the fuse and the light was still on....ill check again and if the fuse popped again then i have a short somewhere

 

[FASTL61]

no...the cig fuse powers the obd2 port so with it popped it wont read cause its not being powered.Replace the fuse and scan it again and it will read it so you know what your code is

 

[cobalt123]

^this, you were not able to read any codes due to the port not receiving any power.

after changing the fuse read the code

find the code http://www.chevycobaltforum.com/forum/showthread.php?t=2726

then you know what to fix

 

[FASTL61]

this man speaks the troof

 

[cobalt123]

i just happened to remember that list

 

[CDN_cobalt]

yes.. i replaced to fuse and then imediately plugged in the reader and it still just said "Link"... like i said ill check that fuse again maybe it popped imediately after replacing it?

 

[FASTL61]

If you use any accessory in the cig lighter remove it,sometimes when you put those in it will pop the fuse.

 

[CDN_cobalt]

yes i had an IPOD charger in there....hmm ill have to wait till i get home tonight and try it all again

 

[FASTL61]

ya alot of times people will put them in kinda sideways and its just enough angle to where + and - connect and it will pop the fuse.So pull it out replace the fuse then try to scan it again.Should work,if not then its either your scanner or obd2 diagnostic port.I dont know where you live but if you have autozones they check it for free.

 

[DaveBlank]

what is the code for your obdII port not working????

 

[FASTL61]

P01FUCKYOU!

 

[CDN_cobalt]

ok gents... i went through the whole car and ALL fuses are good...traced the wiring back from the OBD port back and no shorts/ bare wires..

plugged the OBDII in and ding "LINK..." i left it on that prompt for 5 minutes and it pops up "ERROR" so its doing the same thing it did before ARGH!!!!!

 

[outtamymind]

i think your scanner is fucked up. have you tried a differen't scanner?

 

[CDN_cobalt]

YA its not my reader i thot of that...i tried 4 different readers

 

[FASTL61]

Then for some reason you computer is not communicating with the port.Take it to the dealer